Lipids are fats. There are a wide variety of lipids (unstaurated and saturated), and range from cooking oil, to butter, to lard, to bacon fat, and much more. Depending on what the lipid is, it will have a different calorie content. Lipids tend to, however, have fairly high calorie contents as they are composed of 3 fatty acidis and a glycerol.
Lipids provide the most amount of energy per gram compared to carbohydrates and proteins. They contain twice as many calories per gram (9 kcal/g) as carbohydrates and proteins (4 kcal/g).
9 kcals/gram Fats and oils contain about 9 kcal/gram. Lipids are a broader category and the answer for lipids is more complex. Lipids are insoluble in water and soluble in fat. There are many different types of lipids. There are 3 main categories of dietary lipids; fats and oils, phospholipids, and cholesterol. Fats and oils contain about 9 kcals/gram. Phospholipids, of what lecithin is a good example, contain about 7 kcals/gram. Cholesterol contains no calories at all. Is insoluble in water and soluble in fat, but is not energy producing - it does not contain any calories at all.
7 kcal per gram
There are 4 kilocalories (kcal) in 1 gram of carbohydrates (CHO).
1 gram of fat is about 9 calories
There are approximately 9 kcal in one gram of plant fats.
3.4 kcal per gram of dextrose.
9 kcal/g
4 per gram the other macronutrients are: protein - 4 per gram (same as carbs) fat - 9 per gram
Fiber does not have any nutritional value or associated calories, because it is not absorbed by the body. It instead adds bulk and mass to the foods you eat, and it is then pushed through the digestive system. All of the fiber you take in is excreted from your body as waste. The only components of food with calculated calorie content are: fat (9 kcal in one gram) protein (4 kcal in one gram) and carbs (4 kcal in one gram). Also, alcohol has a caloric value of 7 kcal per gram.
9 calories are the equivalent to 1 gram of fat.
One gram of carbohydrates contains 4 calories.